I used to call that "Too Many Interests Syndrome," and I tend to be a bit like that, myself... even as I write these words, I am working on many different projects and microbusinesses, side by side.

Which is not to say that I am not highly proficient at many of the things I am involved with... but I tend to get to a point where I just feel more interested in moving on to the next thing. Easily bored? Maybe... or maybe it's just that I know I do my best work at something when I am truly interested in it... when I start growing bored and inspiration declines, so does the "quality" of what I have to offer people.